8.How is an emission line spectrum used to identify an element? A.The emission line spectrum can be used to calculate the orbitals and energy levels of an element. B.The emission line spectrum of each element is unique to the element.  C.Exciting an atom can cause it to bond with another specific element. D.Exciting an atom can cause it to emit an electron and react with gold foil.

Q: How many total electrons and valence electrons are foundin an atom of each of the following…

A: Principle energy level is denoted by 'n' and it depicts the number of electrons present in a shell.…

Q: This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI…

A: Part (A) Recall that the electron in the ground state has the lowest energy. Thus, EA​=250zJ Part…

Q: a.element As (33) b.element I (53) Write the electron configurations for these elements and how many…

A: Electronic configuration : Electronic configuration can be defined as distribution of electrons of…

Q: What atom matches this electron configuration? 1s2 2s2 2p6 3s2 3p6 4s2 3d10 A. S B. C C. V D. B

A: 1s2 2s2 2p6 3s2 3p6 4s2 3d10  Total electron count = 30

Q: Which one of the following statements is INCORRECT? A. Ionization energy is always a positive value.…

A: Given: Ionization energy.  To find : incorrect statement about ionization energy.  Solution : As we…

Q: Which of the following statements are true? I. An excited atom can return to its ground state by…

A: Electromagnetic radiations are the waves having both electric and magnetic fields and travel at the…

Q: ionization energy.

A: Ionisation energy is defined as an energy which is required to remove an electron(e-) from an…

Q: an atom of which of the following elements has the most negative electron affinity? a. Rb b. As c.…

A: Atomic radius of atoms increases from top to bottom in a group and decreases from left to right in a…

Q: Determine the number of valence electrons in an atom of each element. Which elements do you expect…

A: SOLUTION: Step 1:  Since the question contains multiple sub-parts, the first three prats are solved.…

Q: History Bookmarks Window Help 749 blackboard.stlcc.edu To St. Louis Community College Take Test:…

A: The element of lowest atomic number whose electronic configuration has five completely filled…

Q: A sample of calcium is excited electrically, resulting in the emission of light with energy…

A:

Q: C. Makes predictions based on Schrodinger's wave equation. D. All of the above the…

A: 5) wave mechanical model is explained by Schrodinger wave equation  It determines most accurate…

Q: What atom and symbol matches this electron configuration?…

A: The electronic configuration is written in  nlx method n = principle quantum number l = azimuthal…

Q: 4.Examine the image of two electromagnetic waves. Which wave is more likely gamma radiation? A.ii,…

A: Gamma rays has the highest energy, which means that they have the highest frequency. In the given…

Q: 1. Which of the following observations did NOT lead to the development of the Bohr model of an atom?…

A: Answer of questions is given below.

Q: Which element has electrons in its p orbital? A. Fe B. K C. Na D. S

A:

Q: What is an emission line spectrum?     A.a visual representation of the range of energy emitted by…

A: The spectra that deal with a chemical molecule are of two types: Absorption spectrum and emission…

Q: Part III: What determines if the photoelectric effect occurs? Complete each of the following…

A:

Q: Which of the following statements is TRUE? a. The magnetic quantum number (ml) describes the…

A: In an atom the position of electron, energy of orbital,shape and size of orbital ,spin of electron…

Q: X-ray Fluorescence is different from Atomic line spectra because a. a photon is absorbed but not…

A: Since you have asked multiple questions, we will solve first question you. For any particular…

Q: Which of these elements has two s and six p electrons in its outer energy level?   A. He…

A: Given: The valence shell has 2 s and 6 p electrons in the outer energy level i.e. valence shell.

Q: In order for an electron to jump up two energy levels in an atom at once, it requires Choose one or…

A: When an electron in an atom absorbs energy, it can move to a higher energy level. Each energy level…

Q: Which of the following statements is incorrect?  a. As the energy of a photon increases, its…

A:

Q: Consider the relationship between energy, frequency, and wavelength of light. The greater (higher)…

A: According Einestein energy equation E= hv where E= energy, v = frequency so energy directly…

Q: Write the complete electron configuration for the follwing. a. sulfur b. potassium c. nickel d.…

A: ◆ Electronic Configuration is the distribution of electrons in the energy levels of the atom. The…

Q: Which one of the statements about electrons and atoms is now considered INCORRECT? Select one: a.…

A: Electrons circle the nucleus in elliptical orbits determined by the atom’s nuclear charge is in…

Q: Which of the following statements is true regarding the energy of an electron in an atom? Select…

A: In any atom, the electrons are revolving in certain orbits around the nucleus of the atom. The…

Q: a. What is the maximum number of electrons that can go into the first shell? The second shell? b.…

A:

Q: Consider an electron in a hydrogen atom that undergoes a transition from n = 3 to n = 7.a. Is the…

A: An electron in Hydrogen atom undergoes a transition from n=3 to n=7 a) The atom undergoing…

Q: 5. Which of the following statement regarding electron configuration and orbital shape s CORRECT? A.…

A: Let's check each option one by one

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.